Optis Tubeless Tire Insert - 29" x 28-40mm Insert w/ Standard Presta Valve MFPN=213035 0 Classic skis are an

0 Classic skis are an evolution of the wildly successful Redline classic ski with a

Era-Es unique stainless steel wear plate protects against shoe rub damage and keeps your cranks looking fresh after spinning up all those pedal-assisted climbs all while adding additional impact protection

Valve stem included Model XC Single Size 29" Tire W 1

The chain is the heart of the Eagle 1x12 drive train ensuring quiet operation long life and precise shifting

They are durable and stay better within the kick-zone than other klisters

Optis Tubeless Tire Insert - 29" x 28-40mm Insert w/ Standard Presta Valve MFPN=213035 0 Classic skis are anOPTIS (Odyssey Pneumatic Tire Insert System) is a lightweight highly tunable high efficiency tubeless tire insert. Tire assemblies are one of the most important performance factors for any bike. They provide all the grip to the ground they serve as a critical first element of the bikes suspension and they provide essential support to the cornering forces that the bike encounters. OPTIS separates the function of the bikes grip from its suspension and